I've just been thinking it for a moment, 3DS can supposly play both DS and DSi mode, however, DS mode was cracked and DSi mode was not.....
It's just, well, DSi mode can play DS games, we've seen that, no one will want to use DS mode if they got DSi mode that can do MORE (unless its for battery saving?)
Therefore Nintendo might remove DS mode, making DS flashcards unable to function on 3DS, since booting DSi mode is impossible by today and booting DS is impossible if there isn't one, that could be very effective making DS flashcards unable to function, maybe DSi flashcards after it's hacked...
opinions?

It's been hack it's just that the development takes time and things don't happen from one day to another. The 3DS has the potential to be hack because of all its features therefore more people are going to try just like the PS3 that was hack just a few months ago. There are people that already hacked it for themselves but they really don't worry about other people so its just a matter of preference and for the good or bad of the hombrew community.